CMakeLists.txt revision 3a210e2d302758101ac06946e86027b327c7d0f3 
1include(TestBigEndian)
2
3include(FindPerl)
4if( NOT PERL_FOUND )
5  message(FATAL_ERROR "Perl required but not found!")
6endif( NOT PERL_FOUND )
7
8set(PERL ${PERL_EXECUTABLE})
9set(VERSION PACKAGE_VERSION)
10set(PREFIX ${LLVM_BINARY_DIR}) # TODO: Root for `make install'.
11set(abs_top_srcdir ${LLVM_MAIN_SRC_DIR})
12set(abs_top_builddir ${LLVM_BINARY_DIR})
13execute_process(COMMAND date
14  OUTPUT_VARIABLE LLVM_CONFIGTIME
15  OUTPUT_STRIP_TRAILING_WHITESPACE)
16# LLVM_ON_UNIX and LLVM_ON_WIN32 already set.
17# those are set to blank by `autoconf' on MinGW, so it seems they are not required:
18#set(LLVMGCCDIR "")
19#set(LLVMGCC "")
20#set(LLVMGXX "")
21test_big_endian(IS_BIG_ENDIAN)
22if( IS_BIG_ENDIAN )
23  set(ENDIAN "big")
24else( IS_BIG_ENDIAN )
25  set(ENDIAN "little")
26endif( IS_BIG_ENDIAN )
27set(SHLIBEXT ${LTDL_SHLIB_EXT})
28#EXEEXT already set.
29set(OS "${CMAKE_SYSTEM}")
30set(ARCH "${LLVM_NATIVE_ARCH}")
31
32get_system_libs(LLVM_SYSTEM_LIBS_LIST)
33foreach(l ${LLVM_SYSTEM_LIBS_LIST})
34  set(LLVM_SYSTEM_LIBS ${LLVM_SYSTEM_LIBS} "-l${l}")
35endforeach()
36
37foreach(c ${LLVM_TARGETS_TO_BUILD})
38  set(TARGETS_BUILT "${TARGETS_BUILT} ${c}")
39endforeach(c)
40set(TARGETS_TO_BUILD ${TARGETS_BUILT})
41set(TARGET_HAS_JIT "1")  # TODO
42
43# Avoids replacement at config-time:
44set(LLVM_CPPFLAGS "@LLVM_CPPFLAGS@")
45set(LLVM_CFLAGS "@LLVM_CFLAGS@")
46set(LLVM_CXXFLAGS "@LLVM_CXXFLAGS@")
47set(LLVM_LDFLAGS "@LLVM_LDFLAGS@")
48set(LIBS "@LIBS@")
49set(LLVM_BUILDMODE "@LLVM_BUILDMODE@")
50
51configure_file(
52  ${CMAKE_CURRENT_SOURCE_DIR}/llvm-config.in.in
53  ${CMAKE_CURRENT_BINARY_DIR}/llvm-config.in
54  @ONLY
55)
56
57set(LIBDEPS ${CMAKE_CURRENT_BINARY_DIR}/LibDeps.txt)
58set(LIBDEPS_TMP ${CMAKE_CURRENT_BINARY_DIR}/LibDeps.txt.tmp)
59set(FINAL_LIBDEPS ${CMAKE_CURRENT_BINARY_DIR}/FinalLibDeps.txt)
60set(LLVM_CONFIG ${LLVM_TOOLS_BINARY_DIR}/llvm-config)
61set(LLVM_CONFIG_IN ${CMAKE_CURRENT_BINARY_DIR}/llvm-config.in)
62
63if( CMAKE_CROSSCOMPILING )
64  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
65endif()
66
67find_program(NM_PATH nm PATH_SUFFIXES /bin)
68
69if( NOT NM_PATH )
70  message(FATAL_ERROR "`nm' not found")
71endif()
72
73add_custom_command(OUTPUT ${LIBDEPS_TMP}
74  COMMAND ${PERL_EXECUTABLE} ${LLVM_MAIN_SRC_DIR}/utils/GenLibDeps.pl -flat ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/${CMAKE_CFG_INTDIR} ${NM_PATH} > ${LIBDEPS_TMP}
75  DEPENDS ${llvm_libs}
76  COMMENT "Regenerating ${LIBDEPS_TMP}")
77
78add_custom_command(OUTPUT ${LIBDEPS}
79  COMMAND ${CMAKE_COMMAND} -E copy_if_different ${LIBDEPS_TMP} ${LIBDEPS}
80  DEPENDS ${LIBDEPS_TMP}
81  COMMENT "Updating ${LIBDEPS} if necessary...")
82
83add_custom_command(OUTPUT ${FINAL_LIBDEPS}
84  COMMAND ${PERL_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/find-cycles.pl < ${LIBDEPS} > ${FINAL_LIBDEPS} || ${CMAKE_COMMAND} -E remove -f ${FINAL_LIBDEPS}
85  DEPENDS ${LIBDEPS}
86  COMMENT "Checking for cyclic dependencies between LLVM libraries.")
87
88set(C_FLGS "${CMAKE_C_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
89set(CXX_FLGS "${CMAKE_CXX_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
90set(CPP_FLGS "${CMAKE_CPP_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
91
92add_custom_command(OUTPUT ${LLVM_CONFIG}
93  COMMAND echo 's!@LLVM_CPPFLAGS@!${CPP_FLGS}!' > temp.sed
94  COMMAND echo 's!@LLVM_CFLAGS@!${C_FLGS}!' >> temp.sed
95  COMMAND echo 's!@LLVM_CXXFLAGS@!${CXX_FLGS}!' >> temp.sed
96  # TODO: Use general flags for linking! not just for shared libs:
97  COMMAND echo 's!@LLVM_LDFLAGS@!${CMAKE_SHARED_LINKER_FLAGS}!' >> temp.sed
98  COMMAND echo 's!@LIBS@!${LLVM_SYSTEM_LIBS}!' >> temp.sed
99  COMMAND echo 's!@LLVM_BUILDMODE@!${CMAKE_BUILD_TYPE}!' >> temp.sed
100  COMMAND sed -f temp.sed < ${LLVM_CONFIG_IN} > ${LLVM_CONFIG}
101  COMMAND ${CMAKE_COMMAND} -E remove -f temp.sed
102  COMMAND cat ${FINAL_LIBDEPS} >> ${LLVM_CONFIG}
103  COMMAND chmod +x ${LLVM_CONFIG}
104  DEPENDS ${FINAL_LIBDEPS} ${LLVM_CONFIG_IN}
105  COMMENT "Building llvm-config script."
106  )
107
108add_custom_target(llvm-config.target ALL
109  DEPENDS ${LLVM_CONFIG})
110
111add_dependencies(llvm-config.target ${llvm_lib_targets})
112
113# Make sure that llvm-config builds before the llvm tools, so we have
114# LibDeps.txt and can use it for updating the hard-coded library
115# dependencies on cmake/modules/LLVMLibDeps.cmake when the tools'
116# build fail due to outdated dependencies:
117set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} llvm-config.target)
118
119install(FILES ${LLVM_CONFIG}
120  PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE
121  WORLD_READ WORLD_EXECUTE
122  DESTINATION bin)
123
124
125# Regeneration of library dependencies.
126
127# See the comments at the end of cmake/modules/LLVMConfig.cmake for
128# notes and guidelines.
129
130set(LLVMLibDeps ${LLVM_MAIN_SRC_DIR}/cmake/modules/LLVMLibDeps.cmake)
131set(LLVMLibDeps_TMP ${CMAKE_CURRENT_BINARY_DIR}/LLVMLibDeps.cmake.tmp)
132
133add_custom_command(OUTPUT ${LLVMLibDeps_TMP}
134  COMMAND sed -e s'@\\.a@@g' -e s'@\\.so@@g' -e 's@libLLVM@LLVM@g' -e 's@: @ @' -e 's@\\\(.*\\\)@set\(MSVC_LIB_DEPS_\\1\)@' ${FINAL_LIBDEPS} > ${LLVMLibDeps_TMP}
135  COMMAND ${CMAKE_COMMAND} -E copy_if_different ${LLVMLibDeps_TMP} ${LLVMLibDeps}
136  DEPENDS ${FINAL_LIBDEPS}
137  COMMENT "Updating cmake library dependencies file ${LLVMLibDeps}"
138  )
139
140if( LLVM_TARGETS_TO_BUILD STREQUAL LLVM_ALL_TARGETS )
141  add_custom_target(llvmlibdeps.target ALL DEPENDS ${LLVMLibDeps_TMP})
142  add_dependencies(llvmlibdeps.target llvm-config.target)
143  set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} llvmlibdeps.target)
144endif()
145
146set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} PARENT_SCOPE)
147